{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1315631",
    "entityType": "User",
    "nonce": "0x4f6f224f8e6eb7e2685ad33a58885bcc063a35aa0fdbf3566370028410136df6",
    "signature": "0x9f2e0a5eb5508cfa078d0ba73ecd84384177ba33664651fd8ce15082fe359d5c7b059fa092ba9e4c095f60b4a87fbbc7b1c57fb3ca012084b6abf4ec3db567df1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}